Vaccinator



ov. M, 1939. T. K. DoRsETT 21179501 VACCINATOR Filed Dec. 16, 1938 l/V VE N TOF? Tag/g K Dorse @M am TTQRNEY Patented Nov. 14, 1939 PATENT OFFICE VACCINATOR Tracy K. Dorsett, Duncan Field,

San Antonio, Tex.

Application December 16, 1938, Serial No. 246,108

5 Claims. (C1. 12S- 333) (Granted under the act of March` 3, 1883, as

' amended April 30, 1928; 370 O. G. 757) This` invention described herein may be manufactured and used by or for the Government for governmental purposes, Without the payment to me of any royalty thereon.

This invention relates to an improved vaccinator which in the science of medicine is used for inoculating human beings or animals with a medical preparation in order to prevent or mitigate an attack of disease.

One of the objects of the invention is to provide a vaccinator for the prevention or treatment of disease by the external application to the skin of a virus-destroying substance in such a manner that the substance will be infused into thek skin immediately after the skin has been scratched by a needle or needles provided on the vaccinator.

Another object of the invention is to provide an adjustable nozzle on the vaccinator which is adapted to carry an adustably mounted needle for scratching the skin and at the same time to discharge a medical preparation onto the skin after having been scratched by the needle.

Another object of thel invention is to provide a vaccinator which is simple in construction and operation, which provides means for starting the iiow of a substance out of the vaccinator and after starting the flow of the substance to cause the substance to continue to flow `automatically for each vaccination without leaking during the interval between the vaccinations.

With the above and other objects and advantages in View, the invention consists of certain features of construction and operation of parts which will hereinafter appear and in which- Fig. 1 is a front-end view of the invention;

Fig. 2 is ,a vertical longitudinally-sectional view of the vaccinator taken on the line 2-2 of Fig. l, showing the vaccinator in an inoperative condition;

Fig. 3 is a side elevation partly in section of the vaccinator with a cover for the vaccinator removed and the nozzle and needle in an adjusted position ready for use; and

Fig. 4 is a front-end view of a modified form of'nozzle containing two needles.

In the illustrated embodiment characterizing the invention I indicates a hollow cylindrical casing formed of hard rubber, composition or other suitable material such as conditions or preference may dictate, one end of said casing being closed by the lintegral rounded end wall 2, and the other end thereof being open and in- Aternally.screw-threaded at 3 for engagement with extends partially around the casing for a purpose which will hereinafter appear.

Received within and extending throughout substantially the entire length of the hollow casing I isa syringe bag 'I formed of soft rubber or other compressible material, the open end or mouth portion 8 of the bag snugly engaging with the reduced extension 4 of the head 5. In this connection, it will be noted that the syringe bagl engages the inner wall of the casing I and that a shoulder 9 is formed adjacent lthe juncture of the nozzle head 5 with the casing I which shoulder is adapted to have abutting engagement with the adjacent marginal portion of the open end of thecasing I, whereby to limit the inward screw-threaded extent of engagement of the head 5 with thecasing, and also to insure a fluid-type connection or jointure as between the head and the adjacent marginal portion of the open end of the casing I.

The head 5 is provided with a central bore IU which is formed longitudinally of and extends throughout the entire length of the head including the reduced extension 4 thereof which is engaged by the open end 8 of the syringe bag "I, whereby the fluid contents in the bag may enter the bore I0.

Slidably and adjustably mounted within the channel I0 of the head 5 is a nozzle II made of soft rubber or other suitable plastic material. The nozzle Il is formed with a concentric way or duct I2 which extends longitudinally therethrough and terminates at the outer or discharge end in a slit I3 in the form of a partially closed fish-tail burner slit, whereby the fluid contents in the syringe bag I after entering the bore I0 of the head 5 may pass through the way or duct I2 of the nozzle II and thence pass through the slit I3 onto the object to be treated. The nozzle II carries a longitudinally extending needle I4 therethrough which projects outwardly from the closed portion of the slit I3 on the discharge end of thel nozzle. The needle I4 may be pulled outwardly from the discharge end of the nozzle II or pushed inwardly for adjusting' the length of the needle extending from the nozzle, depending on the depth of the scratch desired, the resiliency of the rubber nozzle holding the needle in adjusted position. The nozzle II may be provided with two needles I4, as illustrated in Fig. 4, or with any number of needles, if desired.

. In order tohold the nozzle II in any adusted othereby exposing the nozzle 35needle i-l. The nozzle I i is then pulled outwardly position in the bore III of the head 5, a set screw I is threadably mounted on the head 5 which set screw is adapted to engage with vthe outer peripheral surface of the nozzle II. By adjustably mounting the nozzle lIl on the head 5, a greater or less protrusion of the nozzle from the head may'be'accomplished iorvvarious. purposes, such as for instance, in engaging the skin of animals having an abundance o1" hair. After the needle I4 has been adjusted on the nozzle I I and thenozzle has been adjusted on the head 5, the vaccine or other uid may be applied and rubbed into the scratched skin by theportions I6 on the outer end of the nozzle I I., formed by the slit I3, The nozzle II being o f soft rubber, the end portions It thereof act as a brush for applying the vaccine onto the skin.

To close and protect the nozzle carrying portion of the vaccinator from dustcr the like, a cap Il is provided on the device, said cap being internallyscrew-threaded at IS and adapted to be turned into engagement with. the externally arranged screwethrea'ds I9 provided on the head 5. In order toi prevent fluid from being held out of the duct or way i12 provided in the nozzle- II, dueI to Vacuum being created therein, a small aperture 2d is formed in the head 5 which er;d tends from th'efinner bore hier thehead tothe outer-peripheral surface of the head and provides an opening for allowing air toenter the device.'y

Inusing the improved vaccinator, one need only te remove the cap I? from the casing i,

until the' inner endthereof isbeyond the breather hole 2li of the head 5' and the needle l@ is also pulled outwardly or pushed inwardly with respect to the nozzle il to adjust its length oi protrusion :from the discharge end of the nozzle, depending on the depth of scratch desired to be produced on `the skin by the needle. In order to prevent the scratching needle iii from becoming contaminated when pulled outwardly or pushed inwardly with respect to the nozzle IE to adjust its length of protrusion, it should be'grasped by a pair of sterilized pliers or by' any other suitable anesthetic device after the nozzle has been locked by the set screw i5 in an adjusted operated position in the bore It. At this time, the syringe bag 'I may be. filled with a medical preparation such as a virusedestroying substance to beY used in the vaccinating. operation; by merely pressing with the thumb or nger. onthe portion 2l. of the syringe bag 'I exposed by theforice Elpro-vided in the casing l1, thus collapsing or partially collapsing the syringe bag. l The outer end of the vaccinator is;now immersed in the substance with which' the syringe bag 'I is to .be lled and the thumb orl finger is removed from. the. orifice. 6", whereupon the syringe bag. will beallowed to expand and in so doing, will create a suction` sufiicient to draw/ a loaded. charge of the. fluid through the slit. If onA the outer end of the nozzle through the way |12 and thence throughl therear endof they bore `IIB of 'the-,head 5 into'the bag T. To repel or discharge the fluid from the syringe bag l they user again :presses inwardly withv the thumb or ringer onto the portion ZI of the syringe .bag 'i to eiect 'a collapsing of the syringe bag,v

whereupon pressure'v willy be applied to theVv contents of said bag and the same discharged therefrom into therearend ofthe-bore I0 of the head,

throughV way l2 and the-slit IS- of the nozzle' II' .onto; the part. of, -the skin which. has vbeen carryingy the l scratched by needle I4. After the Iiow of the contents through the nozzle has once been started it will continue to iiow automatically after each vaccination due to the opening 20 acting as a breather hole, without the opening the contents Would be held out of the nozzle due to vacuum being created therein.

It will thus be seen that there is provided a highly novel and efiicient form of vaccinator which is well adapted for all the purposes indicated and even though there has been herein described certain features of construction and operation of parts, it is nevertheless to be understood that various changes may be made therein without departing from the spirit or scope of the invention.A

Having described my invention, What I claim as new and wish to secure by Letters Patent is:

1. A vaccinator .comprising in combination a casing having an open end, a syringe bag received within said casing, ahead engaged in said open end of the casing and with the mouth of said syringebag,a bore andan air aperture formed in said head, said bore leading from an outer end of the head to the mouth of the syringe bag and said aperture leading into said channel and a needle carrying nozzle adjustably mounted in said bore, said casing having an oriiice permitting finger pressure upon said syringe bag and causing the discharge of matter within the syringe bag through said. nozzle.

2. A vaccinator comprising in combination a casing having an open end, a syringe bag received within said casing, a head engaged in said open end of the casing and with the mouth of said syringe bag, a bore and an air aperture formed in said head, said bore leading from an outer end of said head to the mouth of said syringe bag, and said aperture leading into said bore, nozzle adjustably mounted in said bore and a needle adjustably mounted on said nozzle, said casing having an orice permitting linger ressure upon said syringe bag and causing the discharge of matter within said syringe bag through said nozzle.

3. A vaccinatorcomprising in combination a casing having anvopen end, a syringe bag receivedy within vvsaid casing., a head engaged in said open end of the casing' and with the mouth of said' syringe bag, a bore andan air aperture formed in said head; said bore extending from an outer end of the head to the` mouth of the syringe bag, and said. aperture leading into said bore, a-nozzle adjustably mounted in thev channel and having a Aslit formed on' thel discharged end having an orifice permittingI linger pressure uponA said syringe bag and causing the discharge of iiuid' matter withiny said.l syringe bag through the nozzle.

4. A vaccinator comprising in: combination an open-ended casing, a syringe bag received within said casing', ahead removably engaged in. the open end of the casing and with. the mouth of said syringe bag, a bore and an air aperture formed'i'n saidl head, saidy borel extending.' from an inner end of said head at the mouth'I of the syringe bag to an outerfend ofthe head and said aperturey leading'intoi said bore, a nozzle adjust.- ably mounted in` the bore ofA said' head', a partially closed slit formed on the discharge. end of` the nozzle anda needle adjusta'bly mounted onsaid nozzle and extending outwardly from the discharge end thereof at the closed portion of said slit, said casing having an orice permitting linger pressure upon said syringe bag and causing the discharge of uid matter Within said syringe bag through the nozzle.

5. A vaccinator comprising in combination an elongated barrel-like casing having an open end, a syringe bag received Within said casing, a head removably engaged in said open end of the casing and with the mouth of said syringe bag, a shoulder formed on said head and adapted to have abutting engagement with the adjacent marginal portion of the open end of said casing, a bore and an air aperture formed in said head, said bore leading from an outer end of the head to the mouth of said syringe bag and said aperture leading into said bore, a nozzle adjustably and slidably mounted in said bore, means on said head for holding the nozzle in adjusted position, needles adjustably mounted on said nozzle, a slit formed on the discharge end of the nozzle, a cap engageable over said nozzle and with an adjacent portion of the head, said casing having an orifice permitting nger pressure upon said syringe bag and causing the discharge of matter Within said syringe bag through an inner end of the bore of said head and the nozzle including the tip on the discharge end thereof..

TRACY K. DORSETT. 

